Wiring
Safety Precautions
WARNING
•
Be sure to disconnect the power supply
before working on the unit.
•
All electrical wiring must be done
according to local and national regulations.
•
Electrical wiring must be done by a
qualified technician. Improper connections
may cause electrical malfunction, injury,
and fire.
•
An independent circuit and single outlet
must be used for this unit.
DO NOT
plug
another appliance or charger into the
same outlet. If the electrical circuit capacity
is not enough or there is a defect in the
electrical work, it can lead to shock, fire,
and unit and property damage.
•
Connect the power cable to the terminals
and fasten it with a clamp. An insecure
connection may cause a fire.
•
Make sure that all wiring is done correctly
and the control board cover is properly
installed. Failure to do so can cause
overheating at the connection points, fire,
and electrical shock.
•
Ensure that the main supply connection is
made through a switch that disconnects
all poles, with a contact gap of a least
0.118 in (3 mm).
•
DO NOT
modify the length of the power
cord or use an extension cord.
CAUTION
•
Connect the outdoor wires before
connecting the indoor wires.
•
Make sure to ground the unit. The
grounding wire should be away from gas
pipes, water pipes, lightning rods,
telephone wires, or other grounding wires.
Improper grounding may cause electrical
shock.
•
DO NOT
connect the unit with the power
source until all wiring and piping is
completed.
•
Make sure that you do not cross your
electrical wiring with your signal wiring, as
this can cause distortion and interference.
Follow these instructions to prevent distortion
when the compressor starts:
•
The unit must be connected to the main
outlet. Normally, the power supply must
have a low output impedance of 32 ohms.
•
No other equipment should be connected
to the same power circuit.
•
The unit’s power information can be found
on the rating sticker on the product.
Outdoor Unit Wiring
WARNING
Before performing any electrical or wiring work,
turn off the main power to the system.
1. Prepare the cable for connection
A. First choose the right cable size. Be sure to
use H07RN-F cables.
T
able 8.1: Minimum Cross-Sectional
A
rea
of Power and Signal Cables North America
Rated Current of
Appliance (A)
AWG
≤
7
18
7 - 13
16
13 - 18
14
18 - 25
12
25 - 30
10
Page 14
8
Wiring
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